What is the shuttle made out of?
We couldn’t work out if it was a very light metal of some sort- but there was minimal heat expansion as I was working on a hot engine??
Posting for future reference
A mate had 28B8 showing which wouldn’t clear. Idle was iffy and engine stumbling.
28B8 shows as mechanical stiffness in vanos exhaust side (or similar)
Changing the exhaust position sensor did nothing
Swapping for a different exhaust sensor did nothing too
A...
Controversial view here-
If that is the case, and of course with everything there needs to be balance; I’d say you are best placed as a moderator to effect a change.
I’m glad we don’t have heavy handed moderation but helping the polarised views see things differently can make a difference...